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Abstract

Medicine

Transmission Electron Microscopy: A Surgical Pathology Tool for Neuroblastoma

Published: July 6th, 2022

DOI:

10.3791/63994

1Anatomic Pathology Division of EORLA, Children's Hospital of Eastern Ontario, University of Ottawa, 2Department of Laboratory Medicine and Pathology, University of Alberta, 3Department of Pediatrics, University of Alberta, Stollery Children's Hospital, 4Department of Orthopedics, Tianyou Hospital, Wuhan University of Science and Technology, 5Institute of Pathology, Medical University of Innsbruck

* These authors contributed equally

Abstract

Pediatric small round blue cell tumors (PSRBCT) are an intriguing and challenging collection of neoplasms. Light microscopy of small round blue cell tumors identifies small round cells. They harbor a generally hyperchromatic nucleus and relatively scanty basophilic cytoplasm. Pediatric small round blue cell tumors include several entities. Usually, they incorporate Wilms tumor, neuroblastoma, rhabdomyosarcoma, Ewing sarcoma, retinoblastoma, lymphoma, and small cell osteosarcoma, among others. Even using immunohistochemistry, the differential diagnosis of these neoplasms may be controversial at light microscopy. A faint staining or an ambiguous background can deter pathologists from making the proper diagnostic decision. In addition, molecular biology may provide an overwhelming amount of data challenging to distinguish them, and some translocations may be seen in more than one category. Thus, transmission electron microscopy (TEM) can be extremely valuable. Here we emphasize the modern protocol for TEM data of the neuroblastoma. Tumor cells with tangles of cytoplasmic processes containing neurosecretory granules can diagnose neuroblastoma.

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Keywords Transmission Electron Microscopy

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